mirror of
https://github.com/espressif/esp-idf.git
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fcd5e502a7
NimBLE throughput example: Changed write api to write without response See merge request espressif/esp-idf!16124
796 lines
18 KiB
C
796 lines
18 KiB
C
/*
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* SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <assert.h>
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#include <string.h>
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#include "host/ble_hs.h"
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#include "gattc.h"
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static void *peer_svc_mem;
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static struct os_mempool peer_svc_pool;
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static void *peer_chr_mem;
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static struct os_mempool peer_chr_pool;
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static void *peer_dsc_mem;
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static struct os_mempool peer_dsc_pool;
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static void *peer_mem;
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static struct os_mempool peer_pool;
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static SLIST_HEAD(, peer) peers;
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static struct peer_svc *
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peer_svc_find_range(struct peer *peer, uint16_t attr_handle);
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static struct peer_svc *
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peer_svc_find(struct peer *peer, uint16_t svc_start_handle,
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struct peer_svc **out_prev);
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int
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peer_svc_is_empty(const struct peer_svc *svc);
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uint16_t
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chr_end_handle(const struct peer_svc *svc, const struct peer_chr *chr);
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int
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chr_is_empty(const struct peer_svc *svc, const struct peer_chr *chr);
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static struct peer_chr *
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peer_chr_find(const struct peer_svc *svc, uint16_t chr_def_handle,
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struct peer_chr **out_prev);
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static void
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peer_disc_chrs(struct peer *peer);
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static int
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peer_dsc_disced(uint16_t conn_handle, const struct ble_gatt_error *error,
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uint16_t chr_val_handle, const struct ble_gatt_dsc *dsc,
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void *arg);
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struct peer *
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peer_find(uint16_t conn_handle)
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{
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struct peer *peer;
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SLIST_FOREACH(peer, &peers, next) {
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if (peer->conn_handle == conn_handle) {
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return peer;
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}
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}
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return NULL;
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}
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static void
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peer_disc_complete(struct peer *peer, int rc)
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{
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peer->disc_prev_chr_val = 0;
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/* Notify caller that discovery has completed. */
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if (peer->disc_cb != NULL) {
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peer->disc_cb(peer, rc, peer->disc_cb_arg);
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}
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}
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static struct peer_dsc *
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peer_dsc_find_prev(const struct peer_chr *chr, uint16_t dsc_handle)
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{
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struct peer_dsc *prev;
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struct peer_dsc *dsc;
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prev = NULL;
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SLIST_FOREACH(dsc, &chr->dscs, next) {
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if (dsc->dsc.handle >= dsc_handle) {
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break;
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}
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prev = dsc;
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}
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return prev;
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}
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static struct peer_dsc *
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peer_dsc_find(const struct peer_chr *chr, uint16_t dsc_handle,
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struct peer_dsc **out_prev)
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{
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struct peer_dsc *prev;
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struct peer_dsc *dsc;
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prev = peer_dsc_find_prev(chr, dsc_handle);
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if (prev == NULL) {
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dsc = SLIST_FIRST(&chr->dscs);
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} else {
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dsc = SLIST_NEXT(prev, next);
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}
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if (dsc != NULL && dsc->dsc.handle != dsc_handle) {
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dsc = NULL;
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}
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if (out_prev != NULL) {
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*out_prev = prev;
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}
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return dsc;
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}
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static int
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peer_dsc_add(struct peer *peer, uint16_t chr_val_handle,
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const struct ble_gatt_dsc *gatt_dsc)
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{
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struct peer_dsc *prev;
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struct peer_dsc *dsc;
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struct peer_svc *svc;
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struct peer_chr *chr;
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svc = peer_svc_find_range(peer, chr_val_handle);
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if (svc == NULL) {
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/* Can't find service for discovered descriptor; this shouldn't
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* happen.
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*/
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assert(0);
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return BLE_HS_EUNKNOWN;
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}
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chr = peer_chr_find(svc, chr_val_handle, NULL);
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if (chr == NULL) {
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/* Can't find characteristic for discovered descriptor; this shouldn't
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* happen.
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*/
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assert(0);
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return BLE_HS_EUNKNOWN;
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}
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dsc = peer_dsc_find(chr, gatt_dsc->handle, &prev);
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if (dsc != NULL) {
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/* Descriptor already discovered. */
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return 0;
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}
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dsc = os_memblock_get(&peer_dsc_pool);
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if (dsc == NULL) {
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/* Out of memory. */
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return BLE_HS_ENOMEM;
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}
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memset(dsc, 0, sizeof * dsc);
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dsc->dsc = *gatt_dsc;
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if (prev == NULL) {
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SLIST_INSERT_HEAD(&chr->dscs, dsc, next);
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} else {
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SLIST_NEXT(prev, next) = dsc;
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}
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return 0;
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}
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static void
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peer_disc_dscs(struct peer *peer)
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{
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struct peer_chr *chr;
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struct peer_svc *svc;
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int rc;
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/* Search through the list of discovered characteristics for the first
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* characteristic that contains undiscovered descriptors. Then, discover
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* all descriptors belonging to that characteristic.
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*/
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SLIST_FOREACH(svc, &peer->svcs, next) {
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SLIST_FOREACH(chr, &svc->chrs, next) {
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if (!chr_is_empty(svc, chr) &&
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SLIST_EMPTY(&chr->dscs) &&
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peer->disc_prev_chr_val <= chr->chr.def_handle) {
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rc = ble_gattc_disc_all_dscs(peer->conn_handle,
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chr->chr.val_handle,
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chr_end_handle(svc, chr),
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peer_dsc_disced, peer);
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if (rc != 0) {
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peer_disc_complete(peer, rc);
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}
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peer->disc_prev_chr_val = chr->chr.val_handle;
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return;
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}
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}
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}
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/* All descriptors discovered. */
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peer_disc_complete(peer, 0);
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}
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static int
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peer_dsc_disced(uint16_t conn_handle, const struct ble_gatt_error *error,
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uint16_t chr_val_handle, const struct ble_gatt_dsc *dsc,
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void *arg)
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{
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struct peer *peer;
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int rc;
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peer = arg;
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assert(peer->conn_handle == conn_handle);
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switch (error->status) {
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case 0:
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rc = peer_dsc_add(peer, chr_val_handle, dsc);
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break;
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case BLE_HS_EDONE:
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/* All descriptors in this characteristic discovered; start discovering
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* descriptors in the next characteristic.
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*/
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if (peer->disc_prev_chr_val > 0) {
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peer_disc_dscs(peer);
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}
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rc = 0;
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break;
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default:
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/* Error; abort discovery. */
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rc = error->status;
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break;
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}
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if (rc != 0) {
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/* Error; abort discovery. */
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peer_disc_complete(peer, rc);
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}
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return rc;
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}
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uint16_t
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chr_end_handle(const struct peer_svc *svc, const struct peer_chr *chr)
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{
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const struct peer_chr *next_chr;
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next_chr = SLIST_NEXT(chr, next);
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if (next_chr != NULL) {
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return next_chr->chr.def_handle - 1;
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} else {
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return svc->svc.end_handle;
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}
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}
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int
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chr_is_empty(const struct peer_svc *svc, const struct peer_chr *chr)
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{
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return chr_end_handle(svc, chr) <= chr->chr.val_handle;
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}
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static struct peer_chr *
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peer_chr_find_prev(const struct peer_svc *svc, uint16_t chr_val_handle)
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{
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struct peer_chr *prev;
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struct peer_chr *chr;
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prev = NULL;
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SLIST_FOREACH(chr, &svc->chrs, next) {
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if (chr->chr.val_handle >= chr_val_handle) {
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break;
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}
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prev = chr;
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}
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return prev;
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}
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static struct peer_chr *
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peer_chr_find(const struct peer_svc *svc, uint16_t chr_val_handle,
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struct peer_chr **out_prev)
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{
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struct peer_chr *prev;
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struct peer_chr *chr;
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prev = peer_chr_find_prev(svc, chr_val_handle);
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if (prev == NULL) {
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chr = SLIST_FIRST(&svc->chrs);
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} else {
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chr = SLIST_NEXT(prev, next);
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}
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if (chr != NULL && chr->chr.val_handle != chr_val_handle) {
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chr = NULL;
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}
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if (out_prev != NULL) {
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*out_prev = prev;
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}
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return chr;
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}
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static void
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peer_chr_delete(struct peer_chr *chr)
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{
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struct peer_dsc *dsc;
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while ((dsc = SLIST_FIRST(&chr->dscs)) != NULL) {
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SLIST_REMOVE_HEAD(&chr->dscs, next);
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os_memblock_put(&peer_dsc_pool, dsc);
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}
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os_memblock_put(&peer_chr_pool, chr);
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}
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static int
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peer_chr_add(struct peer *peer, uint16_t svc_start_handle,
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const struct ble_gatt_chr *gatt_chr)
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{
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struct peer_chr *prev;
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struct peer_chr *chr;
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struct peer_svc *svc;
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svc = peer_svc_find(peer, svc_start_handle, NULL);
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if (svc == NULL) {
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/* Can't find service for discovered characteristic; this shouldn't
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* happen.
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*/
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assert(0);
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return BLE_HS_EUNKNOWN;
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}
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chr = peer_chr_find(svc, gatt_chr->def_handle, &prev);
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if (chr != NULL) {
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/* Characteristic already discovered. */
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return 0;
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}
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chr = os_memblock_get(&peer_chr_pool);
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if (chr == NULL) {
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/* Out of memory. */
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return BLE_HS_ENOMEM;
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}
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memset(chr, 0, sizeof * chr);
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chr->chr = *gatt_chr;
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if (prev == NULL) {
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SLIST_INSERT_HEAD(&svc->chrs, chr, next);
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} else {
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SLIST_NEXT(prev, next) = chr;
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}
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return 0;
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}
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static int
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peer_chr_disced(uint16_t conn_handle, const struct ble_gatt_error *error,
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const struct ble_gatt_chr *chr, void *arg)
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{
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struct peer *peer;
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int rc;
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peer = arg;
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assert(peer->conn_handle == conn_handle);
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switch (error->status) {
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case 0:
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rc = peer_chr_add(peer, peer->cur_svc->svc.start_handle, chr);
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break;
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case BLE_HS_EDONE:
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/* All characteristics in this service discovered; start discovering
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* characteristics in the next service.
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*/
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if (peer->disc_prev_chr_val > 0) {
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peer_disc_chrs(peer);
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}
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rc = 0;
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break;
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default:
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rc = error->status;
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break;
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}
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if (rc != 0) {
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/* Error; abort discovery. */
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peer_disc_complete(peer, rc);
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}
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return rc;
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}
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static void
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peer_disc_chrs(struct peer *peer)
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{
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struct peer_svc *svc;
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int rc;
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/* Search through the list of discovered service for the first service that
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* contains undiscovered characteristics. Then, discover all
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* characteristics belonging to that service.
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*/
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SLIST_FOREACH(svc, &peer->svcs, next) {
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if (!peer_svc_is_empty(svc) && SLIST_EMPTY(&svc->chrs)) {
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peer->cur_svc = svc;
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rc = ble_gattc_disc_all_chrs(peer->conn_handle,
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svc->svc.start_handle,
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svc->svc.end_handle,
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peer_chr_disced, peer);
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if (rc != 0) {
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peer_disc_complete(peer, rc);
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}
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return;
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}
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}
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/* All characteristics discovered. */
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peer_disc_dscs(peer);
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}
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int
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peer_svc_is_empty(const struct peer_svc *svc)
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{
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return svc->svc.end_handle <= svc->svc.start_handle;
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}
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static struct peer_svc *
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peer_svc_find_prev(struct peer *peer, uint16_t svc_start_handle)
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{
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struct peer_svc *prev;
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struct peer_svc *svc;
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prev = NULL;
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SLIST_FOREACH(svc, &peer->svcs, next) {
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if (svc->svc.start_handle >= svc_start_handle) {
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break;
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}
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prev = svc;
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}
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return prev;
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}
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static struct peer_svc *
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peer_svc_find(struct peer *peer, uint16_t svc_start_handle,
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struct peer_svc **out_prev)
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{
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struct peer_svc *prev;
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struct peer_svc *svc;
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prev = peer_svc_find_prev(peer, svc_start_handle);
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if (prev == NULL) {
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svc = SLIST_FIRST(&peer->svcs);
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} else {
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svc = SLIST_NEXT(prev, next);
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}
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if (svc != NULL && svc->svc.start_handle != svc_start_handle) {
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svc = NULL;
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}
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if (out_prev != NULL) {
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*out_prev = prev;
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}
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return svc;
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}
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static struct peer_svc *
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peer_svc_find_range(struct peer *peer, uint16_t attr_handle)
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{
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struct peer_svc *svc;
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SLIST_FOREACH(svc, &peer->svcs, next) {
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if (svc->svc.start_handle <= attr_handle &&
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svc->svc.end_handle >= attr_handle) {
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return svc;
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}
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}
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return NULL;
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}
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const struct peer_svc *
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peer_svc_find_uuid(const struct peer *peer, const ble_uuid_t *uuid)
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{
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const struct peer_svc *svc;
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SLIST_FOREACH(svc, &peer->svcs, next) {
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if ((uuid != NULL) && (ble_uuid_cmp(&(svc->svc.uuid.u), uuid) == 0)) {
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return svc;
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}
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}
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return NULL;
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}
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const struct peer_chr *
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peer_chr_find_uuid(const struct peer *peer, const ble_uuid_t *svc_uuid,
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const ble_uuid_t *chr_uuid)
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{
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const struct peer_svc *svc;
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const struct peer_chr *chr;
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svc = peer_svc_find_uuid(peer, svc_uuid);
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if (svc == NULL) {
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return NULL;
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}
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SLIST_FOREACH(chr, &svc->chrs, next) {
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if ((chr_uuid != NULL) && (ble_uuid_cmp(&chr->chr.uuid.u, chr_uuid) == 0)) {
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return chr;
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}
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}
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return NULL;
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}
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const struct peer_dsc *
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peer_dsc_find_uuid(const struct peer *peer, const ble_uuid_t *svc_uuid,
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const ble_uuid_t *chr_uuid, const ble_uuid_t *dsc_uuid)
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{
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const struct peer_chr *chr;
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const struct peer_dsc *dsc;
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chr = peer_chr_find_uuid(peer, svc_uuid, chr_uuid);
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if (chr == NULL) {
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return NULL;
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}
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SLIST_FOREACH(dsc, &chr->dscs, next) {
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if ((dsc_uuid != NULL) && (ble_uuid_cmp(&dsc->dsc.uuid.u, dsc_uuid) == 0)) {
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return dsc;
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}
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}
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return NULL;
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}
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static int
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peer_svc_add(struct peer *peer, const struct ble_gatt_svc *gatt_svc)
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{
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struct peer_svc *prev;
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struct peer_svc *svc;
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svc = peer_svc_find(peer, gatt_svc->start_handle, &prev);
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if (svc != NULL) {
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/* Service already discovered. */
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return 0;
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}
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svc = os_memblock_get(&peer_svc_pool);
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if (svc == NULL) {
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/* Out of memory. */
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return BLE_HS_ENOMEM;
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}
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memset(svc, 0, sizeof * svc);
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|
svc->svc = *gatt_svc;
|
|
SLIST_INIT(&svc->chrs);
|
|
|
|
if (prev == NULL) {
|
|
SLIST_INSERT_HEAD(&peer->svcs, svc, next);
|
|
} else {
|
|
SLIST_INSERT_AFTER(prev, svc, next);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
peer_svc_delete(struct peer_svc *svc)
|
|
{
|
|
struct peer_chr *chr;
|
|
|
|
while ((chr = SLIST_FIRST(&svc->chrs)) != NULL) {
|
|
SLIST_REMOVE_HEAD(&svc->chrs, next);
|
|
peer_chr_delete(chr);
|
|
}
|
|
|
|
os_memblock_put(&peer_svc_pool, svc);
|
|
}
|
|
|
|
static int
|
|
peer_svc_disced(uint16_t conn_handle, const struct ble_gatt_error *error,
|
|
const struct ble_gatt_svc *service, void *arg)
|
|
{
|
|
struct peer *peer;
|
|
int rc;
|
|
|
|
peer = arg;
|
|
assert(peer->conn_handle == conn_handle);
|
|
|
|
switch (error->status) {
|
|
case 0:
|
|
rc = peer_svc_add(peer, service);
|
|
break;
|
|
|
|
case BLE_HS_EDONE:
|
|
/* All services discovered; start discovering characteristics. */
|
|
if (peer->disc_prev_chr_val > 0) {
|
|
peer_disc_chrs(peer);
|
|
}
|
|
rc = 0;
|
|
break;
|
|
|
|
default:
|
|
rc = error->status;
|
|
break;
|
|
}
|
|
|
|
if (rc != 0) {
|
|
/* Error; abort discovery. */
|
|
peer_disc_complete(peer, rc);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
peer_disc_all(uint16_t conn_handle, peer_disc_fn *disc_cb, void *disc_cb_arg)
|
|
{
|
|
struct peer_svc *svc;
|
|
struct peer *peer;
|
|
int rc;
|
|
|
|
peer = peer_find(conn_handle);
|
|
if (peer == NULL) {
|
|
return BLE_HS_ENOTCONN;
|
|
}
|
|
|
|
/* Undiscover everything first. */
|
|
while ((svc = SLIST_FIRST(&peer->svcs)) != NULL) {
|
|
SLIST_REMOVE_HEAD(&peer->svcs, next);
|
|
peer_svc_delete(svc);
|
|
}
|
|
|
|
peer->disc_prev_chr_val = 1;
|
|
peer->disc_cb = disc_cb;
|
|
peer->disc_cb_arg = disc_cb_arg;
|
|
|
|
rc = ble_gattc_disc_all_svcs(conn_handle, peer_svc_disced, peer);
|
|
if (rc != 0) {
|
|
return rc;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
peer_delete(uint16_t conn_handle)
|
|
{
|
|
struct peer_svc *svc;
|
|
struct peer *peer;
|
|
int rc;
|
|
|
|
peer = peer_find(conn_handle);
|
|
if (peer == NULL) {
|
|
return BLE_HS_ENOTCONN;
|
|
}
|
|
|
|
SLIST_REMOVE(&peers, peer, peer, next);
|
|
|
|
while ((svc = SLIST_FIRST(&peer->svcs)) != NULL) {
|
|
SLIST_REMOVE_HEAD(&peer->svcs, next);
|
|
peer_svc_delete(svc);
|
|
}
|
|
|
|
rc = os_memblock_put(&peer_pool, peer);
|
|
if (rc != 0) {
|
|
return BLE_HS_EOS;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
peer_add(uint16_t conn_handle)
|
|
{
|
|
struct peer *peer;
|
|
|
|
/* Make sure the connection handle is unique. */
|
|
peer = peer_find(conn_handle);
|
|
if (peer != NULL) {
|
|
return BLE_HS_EALREADY;
|
|
}
|
|
|
|
peer = os_memblock_get(&peer_pool);
|
|
if (peer == NULL) {
|
|
/* Out of memory. */
|
|
return BLE_HS_ENOMEM;
|
|
}
|
|
|
|
memset(peer, 0, sizeof * peer);
|
|
peer->conn_handle = conn_handle;
|
|
|
|
SLIST_INSERT_HEAD(&peers, peer, next);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
peer_free_mem(void)
|
|
{
|
|
free(peer_mem);
|
|
peer_mem = NULL;
|
|
|
|
free(peer_svc_mem);
|
|
peer_svc_mem = NULL;
|
|
|
|
free(peer_chr_mem);
|
|
peer_chr_mem = NULL;
|
|
|
|
free(peer_dsc_mem);
|
|
peer_dsc_mem = NULL;
|
|
}
|
|
|
|
int
|
|
peer_init(int max_peers, int max_svcs, int max_chrs, int max_dscs)
|
|
{
|
|
int rc;
|
|
|
|
/* Free memory first in case this function gets called more than once. */
|
|
peer_free_mem();
|
|
|
|
peer_mem = malloc(
|
|
OS_MEMPOOL_BYTES(max_peers, sizeof (struct peer)));
|
|
if (peer_mem == NULL) {
|
|
rc = BLE_HS_ENOMEM;
|
|
goto err;
|
|
}
|
|
|
|
rc = os_mempool_init(&peer_pool, max_peers,
|
|
sizeof (struct peer), peer_mem,
|
|
"peer_pool");
|
|
if (rc != 0) {
|
|
rc = BLE_HS_EOS;
|
|
goto err;
|
|
}
|
|
|
|
peer_svc_mem = malloc(
|
|
OS_MEMPOOL_BYTES(max_svcs, sizeof (struct peer_svc)));
|
|
if (peer_svc_mem == NULL) {
|
|
rc = BLE_HS_ENOMEM;
|
|
goto err;
|
|
}
|
|
|
|
rc = os_mempool_init(&peer_svc_pool, max_svcs,
|
|
sizeof (struct peer_svc), peer_svc_mem,
|
|
"peer_svc_pool");
|
|
if (rc != 0) {
|
|
rc = BLE_HS_EOS;
|
|
goto err;
|
|
}
|
|
|
|
peer_chr_mem = malloc(
|
|
OS_MEMPOOL_BYTES(max_chrs, sizeof (struct peer_chr)));
|
|
if (peer_chr_mem == NULL) {
|
|
rc = BLE_HS_ENOMEM;
|
|
goto err;
|
|
}
|
|
|
|
rc = os_mempool_init(&peer_chr_pool, max_chrs,
|
|
sizeof (struct peer_chr), peer_chr_mem,
|
|
"peer_chr_pool");
|
|
if (rc != 0) {
|
|
rc = BLE_HS_EOS;
|
|
goto err;
|
|
}
|
|
|
|
peer_dsc_mem = malloc(
|
|
OS_MEMPOOL_BYTES(max_dscs, sizeof (struct peer_dsc)));
|
|
if (peer_dsc_mem == NULL) {
|
|
rc = BLE_HS_ENOMEM;
|
|
goto err;
|
|
}
|
|
|
|
rc = os_mempool_init(&peer_dsc_pool, max_dscs,
|
|
sizeof (struct peer_dsc), peer_dsc_mem,
|
|
"peer_dsc_pool");
|
|
if (rc != 0) {
|
|
rc = BLE_HS_EOS;
|
|
goto err;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err:
|
|
peer_free_mem();
|
|
ESP_LOGE("ERROR", "Error while allocating mem");
|
|
return rc;
|
|
}
|